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pond circulator Articles

In order to control the growth of Microcystis in aquaculture ponds and reduce its adverse effect on water quality and aquaculture, a production-scale experiment of deep well circulation treatment was carried out in an aquaculture pond with water surface area of 63,000 m2 and water depth of 1.6–2.0 m. Compared with the control pond, the experiment pond had better water quality as ...

Duckweed in wastewater ponds can be tough to get rid of. A pond over run by duckweed can cause a host of processing problems that many people may not realize and it is in the best interest of any wastewater system to minimize duckweed impacts. No one method is a cure all for every application. Sometimes it takes a combination of strategies to keep duckweed at bay. ...

Overview: This is a facultative pond for the wastewater treatment plant (WWTP) serving a town of about 2,000. The WWTP is a continuous flow system with a design flow of 0.16 MG/day, but does receive up to 0.9 MG/day during rainy periods. The facultative treatment pond is 16 acres in surface area, and has a mean depth of 5.5 feet deep with an average slurry/sludge depth of about 9 inches. The pond ...

The Facility Eagle-Picher Industries has an 8-acre hazardous waste surface impoundment pond at its Electro-Optics Division plant in Quapaw, Oklahoma. The Problem By the time Eagle-Picher contacted Aqua-Chem ICD, the impoundment pond had been in use for more than 20 years and contained more than 5 million gallons. Environmental regulation required the plant ...

With increasing human populations comes the corresponding increased need for improving water quality in lakes, wastewater ponds, potable water reservoirs, and other water storage facilities. Providing circulation within water reservoirs of all types has long been known to provide meaningful benefits, but the costs to achieve sufficient circulation through diffused aeration or mechanical mixers ...

Three pilot-scale duckweed pond (DP) wastewater treatment systems were designed and operated to examine the effect of aeration and effluent recycling on treatment efficiency. Each system consisted of two DPs in series fed by pre-settled domestic sewage. The first system (duckweed+ conventional treatment) was ‘natural’ and included only duckweed plants. The second system ...

Long-distance circulators are different from any other reservoir equipment in that the adjustable intake takes advantage of the manner in which water forms thin horizontal layers in ponds, and allows a precise horizontal cross-section of water to be circulated throughout the entire pond footprint. ...

Vortex separators still draw attention from specialists investigating the process of removing particles suspended in liquids. The devices are locally applied for waste water treatment in different systems – from storm waste water sewerage to water circulation in fish ponds. However, the methods for separator design presented in the literature are questionable. The paper presents two ...

Topics: Wastewater, complete mix, partial mix, sludge reduction, energy savings Overview: The City wastewater treatment plant (WWTP) consists of two lagoons. The primary lagoon is a complete mix pond covering 2.8 acres with a 12 ft operating depth and a total volume of 6.9 MG. The secondary lagoon is a partial mix pond with three cells covering 35.2 acres with a total ...

The Facility The Arlington Valley Power station being developed by DENA is a large combined cycle power plant located in Arlington, Arizona. Duke/Fluor Daniel (DFD) of Houston, Texas are owner engineers and contractors. DFD were instrumental in selecting the HERO route for its economy, ease of operation and reduced operating costs. DFD obtained their permitting based on ...

Advanced techniques for super intensive shrimp cultivation are common in Tahiti due to researchers high-tech expertise on this land-limited island. Most farms are stocked with Penaeus vannamei or P.stylirostris shrimp at densities of 100 to 120 animals per m 2. Production rates average 20,000 kg per hectare per year. Survival rates are 70 per cent. Researchers compared aerators. Tests showed the ...

SolarBee® & GridBee® Are Leading The Way In most lagoons, sunlight causes a hard stratification at 12 to 18 inches of depth. The top water is warmer and thick algae populations are producing supersaturated dissolved oxygen (DO). The DO gasses off at the surface and is not readily available deeper in the pond for use by BOD-reducing bacteria. Meanwhile new ...

The Facility The 570-Megawatt Silverhawk Power Station is a natural gas-fired combined cycle electric generating station located in Clark County 20 miles north of Las Vegas, Nevada. In order to meet the permitting requirements and conserve water, the facility uses a dry cooling arrangement. The project was constructed by Lockwood Greene acting as EPC under the project management ...

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